# A081996 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 9 5 17 6 29 7 41 8 49 9 79 10 103 11 121 12 167 13 169 14 251 15 307 16 353 17 361 18 461 19 529 20 601 21 673 22 761 23 859 24 953 25 1051 26 1147 27 1279 28 1399